Steam and hot-water radiator



March 13, 1928.

E. COUPLAND STEAM AND HOT WATERBADIATOR Filed Sept. 11. 1926 [nzreniarErnesi Enzmland Patented Mar. 13, 1928.

UNITED STATES PATENT OFFICE.

ERNST COUPLANID, OF TORONTO, ONTARIO, CANADA, ASSIGNOR OF ONE-FOURTH TOEDMUND MGGILLIVRAY, ONE-FOURTH TO HENRY EDWIN SILVEBTI'IOR-NE, ANDONE-FOURTH TO FRANK OSBORNE, ALL OF TORONTO, CANADA.

STEAM AND HOT-'WATER RADIATOR.

Application filed September 11, 1926. Serial No. 184,877.

My invention relates to improvements in steam or hot water radiators,and the object of the inventionis to devise a radiator this type whichwill be light, strong and durable, which will not corrode, which willhave maximum radiation for any given pressure, and which due to its evenexpansion and contraction will eliminate the detrimental results due tofreezing, and it consists essentially of the arrangement and construction of parts as hereinafter more particularly explained.

Fig. 1 represents a perspective view of a radiator section constructedin accordance with my invention.

Fig. 2 is a longitudinal sectional view through one of the headersintermediately broken away for a part of its length.

Fig. 3 is a further enlarged sectional dctail showing the steam pipeconnection to the enclosure of the upper header.

Fig. 4 is a sectional view similar to Figure showing the hot waterconnections to the lower header 4.

In the drawing like characters of reference indicate corresponding partsin each figure.

1 and 2 indicate the upper and lower headers which are preferablyoctagonal and connected by the water tubes 3 which are weld ed theretoto form an integral unit. The ends of the headers 1 and 2 are open endedand provided with closures 4, such closures being provided with internalflanges 5 fit ting within the ends of the headers 1 and 2 and weldedtherein.

Each closure 4 is provided with a central boss 6 recessed as indicatedat 7 so as to receive an end of a perforated tube 8, which ends arefreely held within the recesses to permit free expansion and contractionof the headers and yet definitely space the closures 4 apart, the tubes8 being perforated in order to permit of their even contraction andexpansion.

WVhen steam is used as the heating medium duce a precipitation of waterthereby lowcring the temperature of the radiator.

When hot water is used as the heating medium the orifice in the closure4 above re ferred to is plugged and the outlet and inlet 9 and 10 areemployed, the hot water passing in through the inlet 9 and risingthrough the water tubes 3 until it gradually cools when the cool watergradually descends passing out from the outlet 10. M i

The radiator section such as I have described may be formed of sheetaluminum which is light, strong, durable and will radiate amaximumamount of heat.

It will also be understood that the tube 8 is perforated to a greaterextent towards the ends than at the centre, the closures at being ofcast metal absorb heat more slowly than the sheet metal of the units andthat therefore if the tubes 8 were perforated evenly the centre of thesection would heat prior to the ends and thereby cause a buckling actionin the metal.

What I claim as my invention is:

A radiator section formed of sheet metal and comprising upper and lowertubular headers and tubes extending between the headers and weldedthereto to form an integral unit, closures for the open ends of theheaders, and perforated tubular spacer extending longitudinally througheach of the headers and slidably held at its ends in the closures to pcunit of the free expansion and contraction of the headers.

nnnsr COUPLAND.

